You must have Boone with you as a companion to activate this quest. In order to access the necessary dialogue options, the player must have spoken to Manny Vargas in Novac or Bitter-Root in Camp McCarran about his tour of duty in the NCR and Bitter Springs. In order to trigger the quest, the player must accumulate at least 5 "history" points with Boone.

Note that these can only be earned while Boone is in your party, although he need not be by your side (you can have him wait elsewhere). If all of the following have been completed before recruiting Boone, it will be impossible to accumulate the required history points.

Vulpes appears at multiple points, leaving several opportunities to kill him. He first appears in Nipton. If spared, he'll appear on the Strip to give you the Mark of Caesar (If you kill Vulpes when he approaches you at the strip, Securitron guards will not become hostile, nor will anyone else, making this the easiest time to kill him). Finally, he'll appear at the Fort by Caesar's side.

Note that this history point is earned for Silus's death at any point, not just during torture. The ideal way of earning it is by making the Speech checks to have Silus discuss the information leaks, talking to Boyd to get the rewards, then re-entering the interrogation room with a weapon and killing Silus with a sneak attack. However, with the latest game update installed, after leaving and speaking to Boyd, the door will lock, requiring a non-existent key.

Note: You can also save all 3 hostages, then after Boone comments about saving them, talk to him and run through the dialogue. You can then kill one of the hostages to gain a bonus point on top of the +2 from saving them, with no negative Karma and no hostility from the other troops.

Although Boone will make a comment about saving the hostages, there is additional dialogue about it that is accessed only when you initiate conversation with him after the event.

Eradicate the Legion: +2. While the eradication can be done at any time, for it to count towards Boone's history points it has to be done while doing Eye for an Eye and the current displayed objective is "Kill all Legionaries in Cottonwood Cove."

The +2 History Points will provide some dialogue which the player can respond to, which will affect Boone's opinion of you when you begin the actual quest. The following dialogues are:

When talking to Boone about Caesar's death, he will tell you that Caesar has an entire line of succession and this will barely slow the Legion down. Regardless he is happy with the death of their leader.

If you rescue the Powder Gangers during the quest Booted, Boone will tell you about the state of affairs with the NCR and Caesar's Legion in the Mojave Wasteland. If they get across the Colorado, it will be too late to save them and the NCR should be patrolling for Legion raiders and setting up checkpoints rather than spreading themselves so thinly if their objective was holding Hoover Dam.

After you killed or rescued the hostages at Nelson, he will tell you about what the NCR had to do to crucified or captured NCR soldiers as the Legion would use gruesome torture tactics to demoralize the other side. To save them the pain of torture, NCR snipers have to perform mercy killing. If you saved them, Boone will be glad you saw another option.

After eradicating the Legion at Cottonwood Cove, Boone would be rather pleased to know the camp where his wife and unborn child was being sold and put out of her misery was wiped out and wish that something like this would happen more often.

In order for Boone to initiate dialogue about Bitter Springs, the player must have both gained Boone's loyalty and talked to either Manny Vargas in Novac or Bitter-Root at Camp McCarran about the Bitter Springs Massacre. After a Speech check of 30 or better is passed the player may suggest going back to Bitter Springs. Boone may initially refuse, but after more companion quests have been completed another request from the player may encourage Boone to revisit Bitter Springs.

Once you get to Bitter Springs, Boone asks you to go to Coyote Tail Ridge, where he was stationed, and tells you exactly what happened during the massacre there. He then asks you if you don't mind staying overnight. If you say yes, the screen will fade out and fade back in, with Boone telling you that a Legion raiding party is on the way. It largely consists of recruits, but they can be tough to defeat, especially if you're trying to avoid casualties. Some tougher units will be mingled with the later waves.

The attacking Legion forces come in three waves.

Wave 1 starts very close to the sloping hill up to the refugee camp, and by the time you get there they will probably be among the tents already. A single Legion Vexillarius brings up the rear far behind and will typically be behind you.

Wave 3 comes through a small gap on the west side that leads to the graveyard. Legion Mongrels lead the way. The soldiers come up behind as usual, but some or all may occasionally stand still in the graveyard.

The quest is considered complete once all three waves are dead. Boone will typically immediately talk to you once the last enemy is dead, but not always. You do not gain NCR Fame until he speaks to you, so you may put on (or take off) faction armor at that point, depending on whether you want to accept the Fame adjustment.
At the end of the conversation his armor is upgraded depending on your last answer. Although both armors are only cosmetically different, this choice actually influences Boone's ending.

After completion of the quest, Mr. New Vegas will report the incident on Radio New Vegas. He mentions that two civilians repelled an entire Legion raiding force, and in an interview, a civilian witness said that "God sent us two angels, and at least one of them had a .308 caliber flaming sword of justice with a telescopic sight." He will say this even if Boone doesn't use his rifle during the quest.

Having the Animal Friend perk makes the dogs in the Legion raiding party non-hostile toward the Courier and Boone (and ED-E or Rex, if present), but they will still be hostile toward other NPC's and must be killed to complete the quest.

If you kill Boone, Mr. New Vegas will mention that Bitter Springs was attacked by a Legion raiding party.

After the patch 1.4.0.525, you cannot enter the interrogation room with a non-holdout weapon even after the interrogation is over, though this can happen without the patch.

If you wish, you can find out how many history points you currently have with Boone by opening the console and typing: show "96bcd".nOpenness

ps3 A serious problem has been noted with the PS3 version, with ALL add-ons installed. The huge lag caused by the massive save files will lag out the game every time. There is no fix, save for uninstalling the addons until the quest is complete. [verified]

pc If you are unable to initiate the quest because you did the majority of the history point items without Boone as a companion, you can manually add points. [verified]

xbox360pc After beginning this quest and traveling to Bitter Springs, Boone will sometimes not initiate the conversation necessary to continue the quest and will have only his default dialogue when spoken to. [verified]

To be able to continue the quest, open the console and enter the command setstage 001349A7 20 This will skip the part of the quest that's glitched, and allow you to begin the "Go with Boone to Coyote Tail Ridge" section of the quest.

pc With the 1.4.0.525 patch, disarming the monorail bomb no longer gives a history point if you kill Curtis, regardless of which method is used to disarm it or if it was disarmed before killing Curtis. The point will only be granted upon completion of the quest if Curtis isn't dead, at which point killing Curtis is no longer an option. [verified]

xbox360ps3 If Boone approaches you saying that he's ready to go to Bitter Springs, but you don't immediately accept, he may become stationary and will not move again until you talk to him and tell him that you want to go to Bitter Springs. [verified]

xbox360pc If Boone is still looking for enemies even after you have defeated all of the Legion, Boone might say "Let's get through this first," when he was supposed to say the scripted line. [verified]

xbox360ps3 Both points you get during I Put A Spell On You may not count; whichever you do first (save the monorail or kill the spy) will count as one history point, but upon completing the other task the other history point will not register. [verified]

xbox360pc Occasionally, Boone will trigger the quest after doing Eye for an Eye, even if no other other history points have been achieved. After sending the radioactive barrels down into Cottonwood Cove, Boone will say the phrase "Wish there was more of them, I wasn't done yet." If one waits for the barrels to kill every enemy in the camp, he will say this phrase 3 times total with each time giving the player 2 "history points." [verified]

One can talk to Boone after every phrase to listen to all parts of the dialogue.

pc In the assault on Bitter Springs, the waves of legionnaires may appear in their starting positions but then stand still and not attack the camp. They will be visible from Coyote Tail Ridge and can be fired upon with a long-range weapon. Killing them all will satisfy the objective. Reloading a save before spending the night on the ridge should cause the soldiers to attack normally. [verified]

xbox360 It is possible that during conversation with Boone and trying to get him to return to Bitter Springs, there will not be a Speech check needed to convince him, and the dialogue option in question will appear without the "[Speech 30]". [verified]